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Investments | 12 Months Ended
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Dec. 31, 2012
Investments | NOTE 5 Investments Investments, which have been classified as ASC 805 Level 1 securities, at December 31 consisted of the following:
|  | 2012 Carrying Value |  |  | 2011 Carrying Value |
(in thousands) |  | Current |  |  | Non- Current |  |  | Current |  |  | Non- Current |
Available-for-sale equity securities |  | $ | — |  |  | $ | — |  |  | $ | 36 |  |  | $ | — |
Certificates of deposit and other securities |  |  | 8,183 |  |  |  | 16 |  |  |  | 7,591 |  |  |  | 516 |
Total investments |  | $ | 8,183 |  |  | $ | 16 |  |  | $ | 7,627 |  |  | $ | 516 |
The following table summarizes available-for-sale securities at December 31:
(in thousands) |  | Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2012 |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
2011 |  | $ | 25 |  |  | $ | 11 |  |  | $ | — |  |  | $ | 36 |
The following table summarizes the proceeds and realized gains/(losses) on equity securities and certificates of deposit for the years ended December 31:
(in thousands) |  | Proceeds |  |  | Gross Realized Gains |  |  | Gross Realized Losses |
2012 |  | $ | 10,654 |  |  | $ | 13 |  |  | $ | — |
2011 |  | $ | 12,950 |  |  | $ | 124 |  |  | $ | — |
2010 |  | $ | 9,327 |  |  | $ | 6 |  |  | $ | — |

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27405-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 3, 19, 20, 21, 22, 137 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Equity Security -URI http://asc.fasb.org/extlink&oid=6511694 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Debt Security -URI http://asc.fasb.org/extlink&oid=6509901 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 + Details
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